Home / 15,851.82-21,831.40-12,253.52

Finding the Fourth Proportional to 15,851.82, 21,831.40 and 12,253.52

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Solution

The fourth proportional to 15,851.82, 21,831.40 and 12,253.52 is: 16,875.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.82 : 21,831.40 = 12,253.52 : x
  2. Step 2: Convert to fraction form
    15,851.82/21,831.40 = 12,253.52/x
  3. Step 3: Cross multiply
    15,851.82x = 21,831.40 × 12,253.52
  4. Step 4: Simplify right side
    15,851.82x = 267,511,496.53
  5. Step 5: Solve for x
    x = 267,511,496.53/15,851.82
  6. Step 6: Final answer
    x = 16,875.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.